Truly depends on what you enjoy and how you interact on those interests.
Example… let’s say I’m into producing music. Maybe I’ll be on Stemstr creating music with plebs around the world. We complete a song, we then upload to Wavlake. All the while we are communicating through Nostr on Damus, Stemstr, Wavlake.
Example… let’s say I’m into food. I’ll use a social client and hashtag #Foodstr, maybe I’ll have a forum within Satellite.Earth and search or upload recipes on Zap.Cooking.
There is an ever growing path for all interests within Nostr all connected to your interoperable profile.
Here a list of apps that you can play around with as well.